<table><tr><td style="">graesslin created this revision.<br />graesslin added reviewers: KWin, Plasma on Wayland.<br />Restricted Application added subscribers: kwin, plasma-devel.<br />Restricted Application added projects: Plasma on Wayland, KWin.</td><a style="text-decoration: none; padding: 4px 8px; margin: 0 8px 8px; float: right; color: #464C5C; font-weight: bold; border-radius: 3px; background-color: #F7F7F9; background-image: linear-gradient(to bottom,#fff,#f1f0f1); display: inline-block; border: 1px solid rgba(71,87,120,.2);" href="https://phabricator.kde.org/D1913" rel="noreferrer">View Revision</a></tr></table><br /><div><strong>REVISION SUMMARY</strong><div><p>If the ShellSurface gets destroyed while a decoration repaint is pending,<br />
it is possible that on tear down the decoration calls into<br />
ShellClient::caption. This used to call into ShellSurfaceInterface::title<br />
which accesses a d-ptr which is already destroyed at that point.</p>
<p>This change caches the caption instead of delegating to ShellSurface,<br />
just like almost everything else caches. Thus the tear down cannot access<br />
invalid memory.</p>
<p>Once we can depend on Frameworks 5.24, we should also make sure to<br />
connect to the new Resource::unbound signal to be able to handle tear<br />
down prior to the object being completely deleted.</p></div></div><br /><div><strong>TEST PLAN</strong><div><p>Unfortunately no test case as this depends on phase-of-moon<br />
aligning of destruction of the interfaces</p></div></div><br /><div><strong>REPOSITORY</strong><div><div>rKWIN KWin</div></div></div><br /><div><strong>BRANCH</strong><div><div>shell-client-cache-caption</div></div></div><br /><div><strong>REVISION DETAIL</strong><div><a href="https://phabricator.kde.org/D1913" rel="noreferrer">https://phabricator.kde.org/D1913</a></div></div><br /><div><strong>AFFECTED FILES</strong><div><div>shell_client.cpp<br />
shell_client.h</div></div></div><br /><div><strong>EMAIL PREFERENCES</strong><div><a href="https://phabricator.kde.org/settings/panel/emailpreferences/" rel="noreferrer">https://phabricator.kde.org/settings/panel/emailpreferences/</a></div></div><br /><div><strong>To: </strong>graesslin, KWin, Plasma on Wayland<br /><strong>Cc: </strong>plasma-devel, kwin, hardening, jensreuterberg, sebas<br /></div>